X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fkernel-version.h;h=d292c0875d7ccf99d0daef86344b863c5406f130;hb=09710b830767f6cc69fc68ea7e1903a1122d1045;hp=38b47cc34e424fc92fb47d82a624b42832461b00;hpb=7b25fa17c155f7088af45e843a711250ab0e7cb7;p=lttng-modules.git

diff --git a/include/lttng/kernel-version.h b/include/lttng/kernel-version.h
index 38b47cc3..d292c087 100644
--- a/include/lttng/kernel-version.h
+++ b/include/lttng/kernel-version.h
@@ -11,11 +11,9 @@
 #define _LTTNG_KERNEL_VERSION_H
 
 #include <linux/version.h>
+#include <linux/types.h>
 #include <generated/utsrelease.h>
 
-#define LTTNG_KERNEL_VERSION(a, b, c) KERNEL_VERSION(a, b, c)
-#define LTTNG_LINUX_VERSION_CODE LINUX_VERSION_CODE
-
 /*
  * The following defines are extracted from the toplevel Linux Makefile and
  * passed on the command line -with '-D'.
@@ -43,19 +41,22 @@
  * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
  * Otherwise, keep using the version code from the headers to minimise the
  * behavior change and avoid regressions.
+ *
+ * Cast the result to uint64_t to prevent overflowing when we append distro
+ * specific version information.
  */
 #if (LTTNG_LINUX_PATCH >= 256)
 
 #define LTTNG_KERNEL_VERSION(a, b, c) \
-	(((a) << 24) + ((b) << 16) + (c))
+	((((a) << 24) + ((b) << 16) + (c)) * 1ULL)
 
 #define LTTNG_LINUX_VERSION_CODE \
 	LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)
 
 #else
 
-#define LTTNG_KERNEL_VERSION(a, b, c) KERNEL_VERSION(a, b, c)
-#define LTTNG_LINUX_VERSION_CODE LINUX_VERSION_CODE
+#define LTTNG_KERNEL_VERSION(a, b, c) (KERNEL_VERSION(a, b, c) * 1ULL)
+#define LTTNG_LINUX_VERSION_CODE (LINUX_VERSION_CODE * 1ULL)
 
 #endif
 
@@ -70,11 +71,11 @@
 /* Ubuntu */
 
 #define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
-	(((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d))
+	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
 
 #ifdef UTS_UBUNTU_RELEASE_ABI
 #define LTTNG_UBUNTU_VERSION_CODE \
-	((LTTNG_LINUX_VERSION_CODE << 8) + UTS_UBUNTU_RELEASE_ABI)
+	((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
 #else
 #define LTTNG_UBUNTU_VERSION_CODE 	0
 #endif
@@ -108,11 +109,11 @@
 /* RHEL */
 
 #define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
-	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
+	(((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
 
 #ifdef RHEL_API_VERSION
 #define LTTNG_RHEL_VERSION_CODE \
-	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION)
+	((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + RHEL_API_VERSION)
 #else
 #define LTTNG_RHEL_VERSION_CODE		0
 #endif
@@ -127,11 +128,11 @@
 /* SUSE Linux enterprise */
 
 #define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
-	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
+	(((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 100000) + ((e) * 100) + (f))
 
 #ifdef SLE_API_VERSION
 #define LTTNG_SLE_VERSION_CODE \
-	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION)
+	((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + SLE_API_VERSION)
 #else
 #define LTTNG_SLE_VERSION_CODE 	0
 #endif
@@ -165,11 +166,11 @@
 /* RT patch */
 
 #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
-	(((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d))
+	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
 
 #ifdef RT_PATCH_VERSION
 #define LTTNG_RT_VERSION_CODE \
-	((LTTNG_LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION)
+	((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION)
 #else
 #define LTTNG_RT_VERSION_CODE 	0
 #endif